6418471878 has 192 divisors, whose sum is σ = 17594304000. Its totient is φ = 1680315840.

The previous prime is 6418471859. The next prime is 6418471903. The reversal of 6418471878 is 8781748146.

6418471878 is a `hidden beast` number, since 6 + 418 + 47 + 187 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16935093 + ... + 16935471.

It is an arithmetic number, because the mean of its divisors is an integer number (91637000).

Almost surely, 2^6418471878 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6418471878, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8797152000).

6418471878 is an abundant number, since it is smaller than the sum of its proper divisors (11175832122).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6418471878 is a wasteful number, since it uses less digits than its factorization.

6418471878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632 (or 615 counting only the distinct ones).

The product of its digits is 2408448, while the sum is 54.

The square root of 6418471878 is about 80115.3660542096. The cubic root of 6418471878 is about 1858.4200440136.

The spelling of 6418471878 in words is "six billion, four hundred eighteen million, four hundred seventy-one thousand, eight hundred seventy-eight".